body,
html {
  width: 100%;
  height: 100%;
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

#app {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-size: 16px !important;
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #2c3e50;
}

::-webkit-scrollbar {
  $width: 9px;
  width: $width;

  &-thumb {
    /*滚动条里面小块*/
    width: $width;
    background-color: rgba(0, 0, 0, 0.6);
    border-radius: $width;
  }

  &-button {
    display: none;
  }

  &-track {
    /*滚动条里面轨道*/
    border-radius: $width;
    background: #fff;
  }
}